51
Setting into Operation
Service Function
Checking Valve Actuation
Carry out the following steps:
1.
Check the valve functions by activating the solenoid valves using the manual oper-
ating element on the solenoid valves: use a screwdriver to turn the screw (S) by 45°
in direction 1.
2.
Switch all of the solenoid valves on and off again one after the other in the order Y1,
Y2 and Y3 – if fitted.
Y1 – main actuator
Y2 – valve disk lifting
Y3 – double-disk lifting
Done.
Service Function
If maintenance is to be carried out on a process valve equipped with a T.VIS M-15
control top, the valve insert must be pulled out of the housing. For this purpose, the
valve disk pretension of the process valve must be relieved by actuating the main actu-
ator. This is made possible by the solenoid manual override. Use a screwdriver to turn
the screw (S) by 45° in direction 1, see diagram Page 50.
